"Earlier today, we made a change to the way the 'block' function of Twitter works. We have decided to revert the change after receiving feedback from many users – we never want to introduce features at the cost of users feeling less safe. Any blocks you had previously instituted are still in effect."

"Revert"?

New level of corporate spin.

After Twitter creates a crisis.

Issues remain: balancing privacy, reputations, safety ... and the wrath of the ticked off trolls you block.